Infiniti FX35 / FX45. Manual — part 485

TROUBLE DIAGNOSIS

EC-701

< SERVICE INFORMATION >

[VK45DE]

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INT/V SOL (B1)

%

• The control value of the intake valve timing con-

trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.

• The advance angle becomes larger as the value

increases.

INT/V SOL (B2)

%

VIAS S/V-1
[ON/OFF]

ON/OFF

• The control condition of the VIAS control sole-

noid valve (determined by ECM according to the
input signals) is indicated.

• OFF: VIAS control solenoid valve is not operat-

ing.
ON: VIAS control solenoid valve is operating.

AIR COND RLY
[ON/OFF]

ON/OFF

• The air conditioner relay control condition (de-

termined by ECM according to the input signals)
is indicated.

FUEL PUMP RLY
[ON/OFF]

ON/OFF

• Indicates the fuel pump relay control condition

determined by ECM according to the input sig-
nals.

VENT CONT/V
[ON/OFF]

ON/OFF

• The control condition of the EVAP canister vent

control valve (determined by ECM according to
the input signals) is indicated.
ON: Closed
OFF: Open

THRTL RELAY
[ON/OFF]

ON/OFF

• Indicates the throttle control motor relay control

condition determined by the ECM according to
the input signals.

COOLING FAN

HI/MID/OFF

• The control condition of the cooling fan (deter-

mined by ECM according to the input signals) is
indicated.
HI: High speed operation
MID: Middle speed operation
OFF: Stop

HO2S2 HTR (B1)
[ON/OFF]

ON/OFF

• Indicates [ON/OFF] condition of heated oxygen

sensor 2 heater determined by ECM according
to the input signals.

HO2S2 HTR (B2)
[ON/OFF]

ON/OFF

I/P PULLY SPD

rpm

• Indicates the engine speed computed from the

turbine revolution sensor signal.

VEHICLE SPEED

km/h or MPH

• The vehicle speed computed from the vehicle

speed signal sent from TCM is displayed.

IDL A/V LEARN

YET/CMPLT

• Display the condition of idle air volume learning

YET: Idle air volume learning has not been per-
formed yet.
CMPLT: Idle air volume learning has already
been performed successfully.

TRVL AFTER MIL

km or mile

• Distance traveled while MIL is activated.

SNOW MODE SW

ON/OFF

• Indicates [ON/OFF] condition from the snow

mode switch signal.

A/F S1 HTR (B1)

%

• Air fuel ratio (A/F) sensor 1 heater control value

computed by ECM according to the input sig-
nals.

• The current flow to the heater becomes larger

as the value increases.

A/F S1 HTR (B2)

%

AC PRESS SEN

V

• The signal voltage from the refrigerant pressure

sensor is displayed.

VHCL SPEED SE

km/h or mph

• The vehicle speed computed from the vehicle

speed signal sent from combination meter is dis-
played.

Monitored item

Unit

Description

Remarks

EC-702

< SERVICE INFORMATION >

[VK45DE]

TROUBLE DIAGNOSIS

NOTE:

Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

ACTIVE TEST MODE

Test Item

SET VHCL SPD

km/h or mph

• The preset vehicle speed is displayed.

MAIN SW

ON/OFF

• Indicates [ON/OFF] condition from MAIN switch

signal.

CANCEL SW

ON/OFF

• Indicates [ON/OFF] condition from CANCEL

switch signal.

RESUME/ACC SW

ON/OFF

• Indicates [ON/OFF] condition from RESUME/

ACCELERATE switch signal.

SET SW

ON/OFF

• Indicates [ON/OFF] condition from SET/COAST

switch signal.

BRAKE SW1

ON/OFF

• Indicates [ON/OFF] condition from ASCD brake

switch signal.

BRAKE SW2

ON/OFF

• Indicates [ON/OFF] condition of stop lamp

switch signal.

DIST SW

ON/OFF

• Indicates [ON/OFF] condition from DISTANCE

switch signal.

VHCL SPD CUT

NON/CUT

• Indicates the vehicle cruise condition.

NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed increased to excessively
high compared with the ASCD set speed, and
ASCD operation is cut off.

LO SPEED CUT

NON/CUT

• Indicates the vehicle cruise condition.

NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low compared with the ASCD set speed, and
ASCD operation is cut off.

AT OD MONITOR

ON/OFF

• Indicates [ON/OFF] condition of A/T O/D ac-

cording to the input signal from the TCM.

AT OD CANCEL

ON/OFF

• Indicates [ON/OFF] condition of A/T O/D cancel

signal sent from the TCM.

CRUISE LAMP

ON/OFF

• Indicates [ON/OFF] condition of CRUISE lamp

determined by the ECM according to the input
signals.

SET LAMP

ON/OFF

• Indicates [ON/OFF] condition of SET lamp de-

termined by the ECM according to the input sig-
nals.

A/F ADJ-B1

—

• Indicates the correction factor stored in ECM.

The factor is calculated from the difference be-
tween the target air/fuel ratio stored in ECM and
the air-fuel ratio calculated from air fuel ratio (A/
F) sensor 1 signal.

A/F ADJ-B2

—

Monitored item

Unit

Description

Remarks

TROUBLE DIAGNOSIS

EC-703

< SERVICE INFORMATION >

[VK45DE]

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*: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.

DTC & SRT CONFIRMATION MODE

SRT STATUS Mode

For details, refer to

EC-633, "Emission-related Diagnostic Information"

.

SRT WORK SUPPORT Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

DTC WORK SUPPORT Mode

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

FUEL INJEC-
TION

• Engine: Return to the original

trouble condition

• Change the amount of fuel injec-

tion using CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Fuel injector
• A/F sensor 1

IGNITION TIM-
ING

• Engine: Return to the original

trouble condition

• Timing light: Set
• Retard the ignition timing using

CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Perform Idle Air Volume Learning.

POWER BAL-
ANCE

• Engine: After warming up, idle the

engine.

• A/C switch: OFF
• Shift lever: N
• Cut off each fuel injector signal

one at a time using CONSULT-III.

Engine runs rough or dies.

• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark plug
• Ignition coil

COOLING FAN*

• Ignition switch: ON
• Turn the cooling fan “HI”, “MID”

and “OFF” using CONSULT-III.

Cooling fan moves and stops.

• Harness and connectors
• Cooling fan motor
• IPDM E/R

ENG COOLANT
TEMP

• Engine: Return to the original

trouble condition

• Change the engine coolant tem-

perature using CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Engine coolant temperature sen-

sor

• Fuel injector

FUEL PUMP RE-
LAY

• Ignition switch: ON (Engine

stopped)

• Turn the fuel pump relay “ON”

and “OFF” using CONSULT-III
and listen to operating sound.

Fuel pump relay makes the operat-
ing sound.

• Harness and connectors
• Fuel pump relay

VIAS S/V-1

• Ignition switch: ON
• Turn solenoid valve “ON” and

“OFF” with CONSULT-III and lis-
ten to operating sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• Solenoid valve

PURG VOL
CONT/V

• Engine: After warming up, run en-

gine at 1,500 rpm.

• Change the EVAP canister purge

volume control solenoid valve
opening percent using CON-
SULT-III.

Engine speed changes according to
the opening percent.

• Harness and connectors
• Solenoid valve

FUEL/T TEMP
SEN

• Change the fuel tank temperature using CONSULT-III.

VENT CON-
TROL/V

• Ignition switch: ON (Engine

stopped)

• Turn solenoid valve “ON” and

“OFF” with the CONSULT-III and
listen to operating sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• Solenoid valve

V/T ASSIGN AN-
GLE

• Engine: Return to the original

trouble condition

• Change intake valve timing using

CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

EC-704

< SERVICE INFORMATION >

[VK45DE]

TROUBLE DIAGNOSIS

*: DTC P1442 and P1456 does not apply to S50 models but appears in DTC Work Support Mode screens.

Generic Scan Tool (GST) Function

INFOID:0000000001326533

DESCRIPTION

Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained below.
ISO15765-4 is used as the protocol.
The name “GST” or “Generic Scan Tool” is used in this service man-
ual.

FUNCTION

Test mode

Test item

Corresponding DTC No.

Reference page

EVAPORATIVE SYSTEM

EVP SML LEAK P0442/P1442*

P0442

EC-926

P0455

EC-973

EVP V/S LEAK P0456/P1456*

P0456

EC-979

PURG VOL CN/V P1444

P0443

EC-933

PURG FLOW P0441

P0441

EC-921

A/F SEN1

A/F SEN1 (B1) P1278/P1279

P0133

EC-822

A/F SEN1 (B1) P1276

P0130

EC-798

A/F SEN1 (B2) P1288/P1289

P0153

EC-822

A/F SEN1 (B2) P1286

P0150

EC-798

HO2S2

HO2S2 (B1) P1146

P0138

EC-840

HO2S2 (B1) P1147

P0137

EC-831

HO2S2 (B1) P0139

P0139

EC-852

HO2S2 (B2) P1166

P0158

EC-840

HO2S2 (B2) P1167

P0157

EC-831

HO2S2 (B2) P0159

P0159

EC-852

SEF139P

Diagnostic service

Function

Service $01

READINESS TESTS

This mode gains access to current emission-related data values, including analog inputs
and outputs, digital inputs and outputs, and system status information.

Service $02

(FREEZE DATA)

This mode gains access to emission-related data value which were stored by ECM during
the freeze frame. For details, refer to

EC-633, "Emission-related Diagnostic Information"

.

Service $03

DTCs

This mode gains access to emission-related power train trouble codes which were stored
by ECM.

Service $04

CLEAR DIAG INFO

This mode can clear all emission-related diagnostic information. This includes:
• Clear number of diagnostic trouble codes (Service $01)
• Clear diagnostic trouble codes (Service $03)
• Clear trouble code for freeze frame data (Service $01)
• Clear freeze frame data (Service $02)
• Reset status of system monitoring test (Service $01)
• Clear on board monitoring test results (Service $06 and $07)

Service $06

(ON BOARD TESTS)

This mode accesses the results of on board diagnostic monitoring tests of specific compo-
nents/systems that are not continuously monitored.